Brush.



1. w. BRADSHAW.

BRUSH.

APPLICATION FILED IAN.24. I910.

Patented Nov. 16, 1915.

reruns w. nnansnnw, or 'rnor, new YORK, ASSIGNOR, BY nnsnn assronnnnrs,T ALPHA anusn COMPANY, or 'rnor, NEW YORK, A conronnrron or new Yonir.

nnusn.

income.

Specification of Letters Patent. Patemtgd N 16 19115,

Application filed January 24, 1910. Serial No. 539,695

To all whom it may concern Be it known that 1, JAMES W. BRADSHAW, acitizen of the United States, residing at Troy, county of Rensselaer,and State of New York, have invented certain new and useful Improvementsin Brushes, of wh ch the following is a specification.

The invention relates to such improvements and consists of the novelconstruction and combination of parts hereinafter described andsubsequently claimed.

Reference may be had to the accompanying drawings, and the referencecharacters marked thereon, which form a part of this specification.Similar characters refer to similar parts in the several figurestherein.

Figure 1 of the drawings is a view in perspective, partly broken awayand partly in cross-section, of a brush made in accordance with myinvention. Fig. 2 is a vertical cross-section of a die or mold adaptedfor forming the bristle-supporting block from plastic material, andembedding therein an attaching body of woven fabric or the like. Fig. 3is a view in cross-section of a brush having a back formed of plasticcomposition, with a wooden bristle-supporting block attached thereto inaccordance with my invention.

The representation of the woven fabric is necessarily somewhatdiagrammatic.

The principal object of the invention is to more securely unite togetherin a brush or bristle-supporting block formed of plastic material and asupporting back therefor.

Other objects of the invention will appear in connection with thefollowing description. 1

My invention is particularly adapted for the manufacture of brusheswherein the bristles have their ends embedded in a block or pad formedof plastic material, which block or pad is mounted within or upon awooden back. The invention may, however, be advantageously employed inany case ,where it is desired to securely attach a block formed ofplastic material to a supporting back or other body.

In carrying out my invention in its preferred form, as illustrated inthe drawings, I incorporate in the bristle-supporting block formed ofplastic material, by embedding therein, a body of woven fabric which isthereafter attached to the brush-back by an adhesive substance.

Referring to the drawings, 1, represents a brush-back preferably, formedof wood provided with a face-recess, 2, adapted to receive abristle-supporting pad, 3, formed of plastic material, in which theinner ends of the tufts of bristles, 4, are embedded so as to projectfrom the outer face thereof.

On the back of the block or pad, 3, is a body, 5, of woven fabricembedded therein so as to expose on the back thereof portions of thefabric-threads. The block thus formed is secured to the brush-back, 1,by means of a suitable adhesive, as glue, where. by the exposed portionsof the fabric-threads are-made adherent to the brush-back.

I have shown the block or pad, 3, faced with a thin sheet, 6, aperturedto permit the bristles to ass thercthrough, which sheet may be ma e ofcelluloid or aluminum or other material adapted to'impart a finishedappearance to the face of the brush. The sheet, 6, may be dispensed withif desired, and the brush-back may be recessed or otherwise, as desired.The fabric, 5, can be applied to, and embedded in, the back of thebrush-pad in any known manner, either at the time the pad is formed orthereafter. If applied after the pad is formed, the back of the pad canbe softened by heat and the fabric pressed thereupon, causing thethreads of the fabric to become more or less embedded in the softenedcomposition. I prefer, however, to incorporate the fabric in the blockor pad at the same operation whereby the pad is formed by the dies uponthe ends of the bristles. In pursuing the latter method, the heatedplastic material is placed upon the exposed ends of the tufts ofbristles, which are supported in holes in the die-plate, 7 a sheet ofwoven fabric is superimposed upon the plastic material and covered bythe upper die-plate, 8, which is forced toward the die-plate, 7, tocause the composition to flow into and fill all parts of the mold ordie-cavity. As soon as the plastic material has set, the upper die-plateis removed, leaving the fabric, 5-, embedded in the plastic material,but with portions of its threads exposed on the back surface thereof,the plastic material having hardened into a rigid pad. The pad thusformed is then removed from the lower die-plate, 7 and placed within therecess, 2, or applied to the face of an unrecessed back to which a' thincoating of glue has been applied.

pad to the brush-back.

For certain purposes of the invention any mterstieed or fibrous body maybe used 1n place of the woven fabric. By the term woven fabric I mean toinclude not only fabric formed by interlacing threads, but fabric formedby interlooping threads as by knitting. v r e p j I have shown thebrush-back provided with a handle, 9, which may be omitted ifdesired. 1

While I have particularly described a preferred form of brush, in whichthe bristle-supporting pad is formed of plastic material and the back ofwood, I consider that making the brush-back of. plastic material and thebristle-supporting block of wood or other material to which is attacheda body of fabric or the like embedded in the plastic composition of theback, to call for a mere reversal of the steps and construction abovedescribed, and to come 'within the spirit of my invention.

In Fig. 3 I havefshown the brush-back,

tached to said back and embedded in said block.

2. A brush having a hard block of plastic material, bristles having oneend embedded in said material and projecting from one face thereof, abody .of fabric embedded in said material and partly exposed upon theother face of said block, and aback adherent to the exposed portions ofsaid fabric.

In testimony whereof, I have hereunto set my hand this 17th day ofJanuary, 1910.

, JAMES W. BRADSHAW.

Witnesses: v V

' FRANK C. CURTIS,

J. DONSBACH.

